Non-Compliance
Clean Water Act
VAUGHN WWTF
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $0 in total penalties since records began.
- Address
-
11TH STREET AND 6TH AVENUE
VAUGHN, MT 59487
View on map ↗ - County
- CASCADE County
- Inspections
- 2 · last Dec 8, 2025
- Total Penalties
- $0 · last Sep 25, 2017
- Registry ID
- 110009860454
Compliance Status (Last 12 Quarters)
Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.
12
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
Compliance Violations
Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.
| Program | Type | Violation Date | Return to Compliance | Status |
|---|---|---|---|---|
| cwa | Monitoring Violations - Improper Analysis or Lab Error | Dec 8, 2025 | Jan 28, 2026 | Resolved |
| cwa | Schedule Event reported late | May 1, 2019 | — | Open |
| cwa | Schedule Event unachieved and not reported | May 1, 2019 | Jan 17, 2020 | Resolved |
| cwa | Schedule Event unachieved but reported | May 1, 2019 | Jan 17, 2020 | Resolved |
| cwa | Schedule Event achieved late but reported | May 1, 2019 | — | Open |
| cwa | Schedule Event reported late | Jan 1, 2019 | — | Open |
| cwa | Schedule Event achieved late but reported | Jan 1, 2019 | — | Open |
| cwa | Reporting Violations - Failure to Notify | Feb 21, 2017 | Mar 15, 2017 | Resolved |
| cwa | Management Practice Violations - Improper Operation and Maintenance | Feb 21, 2017 | Mar 15, 2017 | Resolved |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Feb 21, 2017 | Mar 15, 2017 | Resolved |
| cwa | Monitoring Violations - Improper Analysis or Lab Error | Feb 21, 2017 | Mar 15, 2017 | Resolved |
| cwa | Management Practice Violations - Failure to Conduct Inspections | Feb 21, 2017 | Mar 15, 2017 | Resolved |
| cwa | Schedule Event unachieved but reported | Dec 31, 2016 | Jun 22, 2017 | Resolved |
| cwa | Schedule Event unachieved and not reported | Dec 31, 2016 | Jun 22, 2017 | Resolved |
| cwa | Schedule Event reported late | Dec 31, 2016 | — | Open |
| cwa | Schedule Event achieved late but reported | Dec 31, 2016 | — | Open |
| cwa | Schedule Event achieved late but reported | Apr 30, 2015 | — | Open |
| cwa | Schedule Event reported late | Apr 30, 2015 | — | Open |
| cwa | Monitoring Violations - Invalid/Unrepresentative Sample | Mar 10, 2014 | Apr 8, 2014 | Resolved |
| cwa | Monitoring Violations - Improper Analysis or Lab Error | Mar 10, 2014 | Apr 8, 2014 | Resolved |
| cwa | Management Practice Violations - Failure to Maintain Records | Mar 10, 2014 | Apr 8, 2014 | Resolved |
| cwa | Effluent Violations - Numeric effluent violation | Mar 10, 2014 | Mar 10, 2014 | Resolved |
| cwa | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | Mar 10, 2014 | Apr 8, 2014 | Resolved |
| cwa | Reporting Violations - Late Submittal of DMRs | Mar 10, 2014 | Apr 8, 2014 | Resolved |
| cwa | Management Practice Violations - Improper Operation and Maintenance | Mar 10, 2014 | Mar 10, 2014 | Resolved |
| cwa | Schedule Event achieved late but reported | Jan 28, 2014 | — | Open |
| cwa | Schedule Event unachieved but reported | Jan 28, 2014 | Mar 25, 2014 | Resolved |
| cwa | Schedule Event reported late | Jan 28, 2014 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jan 28, 2014 | Mar 25, 2014 | Resolved |
| cwa | Schedule Event achieved late but reported | Sep 5, 2010 | — | Open |
| cwa | Schedule Event reported late | Sep 5, 2010 | — | Open |
| cwa | Management Practice Violations - Improper Operation and Maintenance | Nov 25, 2009 | Feb 25, 2010 | Resolved |
| cwa | Monitoring Violations - Improper Analysis or Lab Error | Nov 25, 2009 | Jan 28, 2010 | Resolved |
| cwa | Effluent Violations - Unapproved Bypass | Nov 25, 2009 | Jan 28, 2010 | Resolved |
| cwa | Permit Violations - Violation Specified in Comment | Jun 11, 2004 | Aug 6, 2010 | Resolved |
Discharge Limit Exceedances
Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.
| Pollutant | Violation | Reported | Limit | Exceedance | Period | Status |
|---|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 14.60 mg/L | 13.00 | +12% | Jan 2019 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 12.18 mg/L | 9.50 | +28% | Jan 2019 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 23.70 mg/L | 13.00 | +82% | Dec 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 23.70 mg/L | 9.50 | +149% | Dec 2018 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 24.00 mg/L | 13.00 | +85% | Nov 2018 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 56.60 mg/L | 45.00 | +26% | Nov 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 24.00 mg/L | 9.50 | +153% | Nov 2018 | Resolved |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 1,294.00 MPN/100mL | 126.00 | +927% | Oct 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 23.90 mg/L | 13.00 | +84% | Oct 2018 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 99,300.00 MPN/100mL | 252.00 | +39,305% | Oct 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 23.90 mg/L | 9.50 | +152% | Oct 2018 | Resolved |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 1,277.00 MPN/100mL | 126.00 | +913% | Sep 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 12.50 mg/L | 9.50 | +32% | Sep 2018 | Resolved |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 16,300.00 MPN/100mL | 252.00 | +6,368% | Sep 2018 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 365.00 MPN/100mL | 252.00 | +45% | Aug 2018 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 46.90 mg/L | 45.00 | +4% | Aug 2018 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 274.00 MPN/100mL | 126.00 | +117% | Aug 2018 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 430.00 MPN/100mL | 252.00 | +71% | Jul 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 10.60 mg/L | 9.50 | +12% | Jul 2018 | Resolved |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 60.50 mg/L | 45.00 | +34% | Jul 2018 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 359.00 MPN/100mL | 126.00 | +185% | Jul 2018 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 35.08 mg/L | 30.00 | +17% | Jul 2018 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 16.30 mg/L | 13.00 | +25% | Jun 2018 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 18,300.00 MPN/100mL | 252.00 | +7,162% | Jun 2018 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 2,742.00 MPN/100mL | 126.00 | +2,076% | Jun 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 16.30 mg/L | 9.50 | +72% | Jun 2018 | Resolved |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 19,442.00 MPN/100mL | 126.00 | +15,330% | May 2018 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 37.96 mg/L | 30.00 | +27% | May 2018 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 18.00 mg/L | 9.50 | +89% | May 2018 | Resolved |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 51,300.00 MPN/100mL | 252.00 | +20,257% | May 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 18.00 mg/L | 13.00 | +38% | May 2018 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 51.60 mg/L | 45.00 | +15% | May 2018 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 457.00 MPN/100mL | 126.00 | +263% | Apr 2018 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 695.00 MPN/100mL | 252.00 | +176% | Apr 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 32.00 mg/L | 9.50 | +237% | Apr 2018 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 32.00 mg/L | 13.00 | +146% | Apr 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 36.40 mg/L | 13.00 | +180% | Mar 2018 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 30.75 mg/L | 30.00 | +3% | Mar 2018 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 36.40 mg/L | 9.50 | +283% | Mar 2018 | Resolved |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 1,980.00 MPN/100mL | 1,260.00 | +57% | Mar 2018 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 963.00 MPN/100mL | 630.00 | +53% | Mar 2018 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 3,551.00 MPN/100mL | 630.00 | +464% | Feb 2018 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 33.78 mg/L | 30.00 | +13% | Feb 2018 | Resolved |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 4,080.00 MPN/100mL | 1,260.00 | +224% | Feb 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 28.30 mg/L | 9.50 | +198% | Jan 2018 | Resolved |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 2,440.00 MPN/100mL | 1,260.00 | +94% | Jan 2018 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 6,442.00 MPN/100mL | 630.00 | +923% | Jan 2018 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 54.00 mg/L | 45.00 | +20% | Jan 2018 | Open |
| BOD, 5-day, percent removal | DMR, Limited - Numeric Violation | 47.00 % | 85.00 | +253% | Jan 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 28.30 mg/L | 13.00 | +118% | Jan 2018 | Open |
Enforcement Actions
Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.
State CWA Penalty AO
Clean Water Act
· Case MT-FID-1934 · Aug 6, 2010
$6,600
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